3. Electrical connections
All the connectors of an MBLM-2 are at the back of the device and are shown on the figure on
the right:
1 – Power inlet: adapter 9 Vac/150 mA or 12
Vdc/150 mA (polarity does not matter)
2 – DB9M - RS-232C for connection to PC
(master modem)
3 – RJ45 – RS-232C for connection to m-bus converter (slave modem)
4 – RJ11 – to the telephone line
The power supply should be connected last.
4. Warranty
The warranty of the device is limited to 2 years from the date of sale. If the device shows any
defect or malfunctions during that period, the manufacturer is obligated to repair the device in its own
service for manufacturer’s expense, or, if the repair is impossible, to replace the device with new one.
The transportation costs to the manufacturer’s service are due to the client. The warranty voids if this
manual’ instructions are not met, warranty seals are removed or the device was opened by unauthorized
by the manufacturer personnel.
Serial number:....................
Date of sale:........................
Signature:................................
5. The package contains
-
MBLM-2 - 1 pc.
-
Instruction manual - 1 pc.
-
Configuration utility CD – 1 pc.
-
Data cable DB9 F-F 1-3 m – 1 pc.
-
Data cable RJ45 straight 1 m – 1 pc.
6. Manufacturer
Gineers Ltd.
7 “Iskarsko shausse” blvd, TCE, building 4
1528 Sofia, Bulgaria
tel./fax (+359-2) 9758105
URL: http://www.gineers.com
e-mail: [email protected]
Phone line
MBLM-2
M-BUS Series
Instruction manual
MBLM-2
is a bidirectional V32.bis full-duplex phone line modem for use in remote reading
systems like
M-bus
. It has RS-232C interface for connection to the reading server (master modem) or
to a M-bus converter device (slave modem).
1. General technical data
- connection protocol
– V.32 bis / V.22 / V.21
- connection speed
– 300/1200/2400/4800/7200/9600/12000/14400 bps
- power supply
– 9 Vac/150mA
или
12 Vdc/150mA, adapter 2 mm
- max. power consumption @ 12Vdc
– <0.4W (idle), <0.8W (online)
- serial port baud rate
– 2400/4800/9600/19200/300 bps
- ambient temperature, operating
– -20
÷
+50
°
C
- ambient temperature, storage
– -50
÷
+90
°
C
- air humidity, operating & storage
– 40
÷
90 %
- dimensions (L/W/H)
– 125/70/30 mm
- protection class
– IP30
- display
– 4 LEDs (on, link, comm /local communication/, line
/remote communication/)
-
weight
–
160
g
2. MBLM-2 operation
MBLM-2 is powered by external adapter 9 Vac/150 mA or 12 Vdc/150mA. The central pin of the
power connector is 2mm thick. We recommend adapter with power rating 12 Vdc/2W. Power supply
voltage should not exceed 14 Vdc.
М
BLM-2 begins operation immediately after power-up. After initialization (about 2s), MBLM-2
enters “Command mode” for master modem or “Incoming call waiting” for slave modem. The working
mode (master/slave) is determined by the state of the serial port’s RTS signal (pin 7). MBLM-2
recognizes the following commands *:
-
info
– returns information about MBLM-2 hardware and software version
-
prm
– returns information about all MBLM-2 programmable parameters values. It is also used
for programming any of these parameters.
-
reset
– restarts and re-initializes MBLM-2 (used after baud rate change)
-
dial
number
– dials “
number
” and connects to the MBLM-2, connected to the phone line,
described with ‘
number
’. “
Number
” can contain only digits (0-9). Only tone dialing supported.
* - all commands may be lower or upper case. No other preceding or trailing characters allowed
(such as space, CR, LF, etc.)
Commands «
info
» and «
prm
» are valid also with slave modem, when sent by the master modem
through the telephone line. It enables the master modem (and the server software) to set remotely all
programmable parameters of the slave MBLM-2 and to check its version.
Connection to remote reading network by MBLM-2
For remote connection by telephone line to remote reading system it is needed that two
MBLM-2 are used. One of them is configured as master (reading server side) and the other is configured
as slave (remote network side). If our software is used, MBLM-2 is configured automatically as master
when connected to the PC. MBLM-2, connected to an m-bus converter type MBRS-xx is automatically
configured as slave. Both modems must be connected to the telephone line.
MBLM-2’s serial ports configuration (baud rate and parity control - programmable parameters
CPB and CPP) depends on their mode – master or slave. The master communicates with the server PC
